<!doctype html>
<meta charset="utf-8">
<title>A negative length in a calc() expression isn't incorrectly clamped.</title>
<link rel="match" href="negative-calc-cv-ref.html">
<style>
  .container {
    width: 500px;
  }
  .kid {
    height: 50px;
    background: green;
    width: calc(-10px + 10%);
  }
</style>
<div class="container">
  <div class="kid"></div>
</div>
